Cedar is by far the best wood to use for raised beds because it naturally rot resistant. Red, white, Yellow Cedar as well as Juniper are great choices and are commonly used. How long the wood will last depends on the type of cedar and your local weather conditions. Using oils like our Garden Bed Oil will help with the longevity of the cedar boards. We offer a wide selection of lengths, widths and depths to fit whatever your needs may be. We even have full fledged cedar beds for the "budget" minded.